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C3550 (Type 1) Porter Cable Compressor - Overview

Diagrams for C3550

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AC CORD – Part Number: D26615
$48.88
In Stock
AC CORD
Part #D26615
This power cord is a genuine high quality item, it is not an aftermarket imitation. It is sourced directly from original equipment manufacturer for use with electric air compressors. It is connected to a standard US outlet to supply power to the unit. Please note, this rubber insulated power cord is sold individually. You will need a screwdriver to replace this item.
ASSY VALVE PLATE – Part Number: Z-AC-0032
$70.30
In Stock
ASSY VALVE PLATE
Part #Z-AC-0032
Sourced directly from the manufacturer, this part is an exact replacement for various air compressors. Its primary purpose is to control the airflow through the pump. This part is an assembly that includes the plate gasket and seals. When this part is malfunctioning, the tank will take longer to fill or will not be able to fill at all. It will need to be replaced once it becomes damaged or worn. You will need a wrench set and a socket set to complete this repair. Customers rated this repair as Easy.
ORING P/L HEAD – Part Number: ACG-45
$6.40
In Stock
ORING P/L HEAD
Part #ACG-45
O-rings are made to contain thousands of PSI pressure by creating a seal between two or more parts. O-ring measurements are defined by the inside diameter and the thickness. rnrnThere are many causes for O-Ring failure. The most common among power tools are: • Extrusion and Nibbling - The O-ring has ragged, tattered edges. These are commonly caused by pressure spikes which shear off tiny "bites" from the o-ring, or caused by clearance gaps. • Abrasion - One or both sides of the o-ring appear rough and slightly flattened. Commonly caused by a contact surface that it too rough, contains grit or is too smooth to allow lubrication. • Over Compression - The O-ring is flattened on both sides and may have a "ring" split along its length. Commonly caused by excessive pressure or heat. • Heat Hardening - The O-ring has a pitted or cracked surface, and is often flattened on both sides. Caused by temperature exceeding o-ring capacity. • Weather/Ozone Cracking - The O-ring is covered in small surface cracks. Caused by exposure to ozone, UV rays and air pollution. Excessive seal stretching (greater that 5%) causes similar cracking.
PRESSURE SWITCH – Part Number: 5140117-89
$103.82
In Stock
PRESSURE SWITCH
★★★★★
★★★★★
(1)
Part #5140117-89
Introducing a genuine Craftsman Pressure Switch thoughtfully designed to ensure peak efficiency for your Craftsman appliances. This robust appliance part is a critical component in many different types of equipment making it an essential purchase for a seamless and trouble-free functioning. This pressure switch is meticulously engineered for reliability and longevity ensuring a long service life for your weekly home maintenance tasks. Don't compromise on quality make the smart choice for your Craftsman appliance with this expertly crafted pressure switch. Proven and reliable the Craftsman Pressure Switch is the ideal choice for keeping your device operating at its best. Trust in Craftsman to deliver quality and durability in every component.
CLAMP HOSE .250 ID – Part Number: CAC-1206-1
$6.40
In Stock
CLAMP HOSE .250 ID
Part #CAC-1206-1
Genuine OEM replacement part, this item is sold individually. This part is used in various places in the compressors listed below. By its part name, it is used to clamp hoses onto certain parts on the compressors.
ASSY FASTENER – Part Number: ACG-408
$6.40
In Stock
ASSY FASTENER
Part #ACG-408
This assembly fastener is supplied directly from the original equipment manufacturer. The screws are constructed of metal, and are compatible with many compressor machines. This part is often used to secure the compressor shroud. It is recommended to refer to specific manual and diagrams for repair instructions. This part is sold individually. Purchasing spare screws is also encouraged, as they can wear out over time and regular use. A hex key and a screwdriver are helpful in the removal and replacement.
ISOLATOR 3 POINT MOU – Part Number: ACG-19
$6.40
In Stock
ISOLATOR 3 POINT MOU
Part #ACG-19
ORING 2.759/2.719ID – Part Number: SSG-8156
$8.04
In Stock
ORING 2.759/2.719ID
Part #SSG-8156
O-rings are made to contain thousands of PSI pressure by creating a seal between two or more parts. O-ring measurements are defined by the inside diameter and the thickness. There are many causes for O-Ring failure. The most common among power tools are: • Extrusion and Nibbling • The O-ring has ragged, tattered edges. These are commonly caused by pressure spikes which shear off tiny "bites" from the o-ring, or caused by clearance gaps. • Abrasion • One or both sides of the o-ring appear rough and slightly flattened. Commonly caused by a contact surface that it too rough, contains grit or is too smooth to allow lubrication. • Over Compression • The O-ring is flattened on both sides and may have a "ring" split along its length. Commonly caused by excessive pressure or heat. • Heat Hardening • The O-ring has a pitted or cracked surface, and is often flattened on both sides. Caused by temperature exceeding o-ring capacity. • Weather/Ozone Cracking • The O-ring is covered in small surface cracks. Caused by exposure to ozone, UV rays and air pollution. Excessive seal stretching (greater that 5%) causes similar cracking.
Valve – Part Number: D20114
$10.70
In Stock
Valve
Part #D20114
This safety valve is a genuine replacement part manufactured for use with air compressors. If the compressor's pressure switch malfunctions, and does not turn the motor off when the amount of pressure is met, the safety valve will open to release the extra air pressure. The amount of pressure required to open the safety valve is set by tension of the spring inside the valve. The spring can wear out, and leave the valve open at a lower pressure than what is set to turn the switch off, and will not allow pressure to build inside the tank. This safety valve has a thread sealant pre-applied, so additional thread sealant is not required, the safety valve is sold individually.
SCREW .250-20X.750 U – Part Number: SSF-586
$6.40
In Stock
SCREW .250-20X.750 U
Part #SSF-586
It is a genuine manufacturer-sourced replacement screw which is specially designed for use with air compressors. This is a standard hardware which has multiple applications depending on the model of your unit, make sure to check appropriate diagrams for the correct location and use of this item. It is a high-quality hex head screw which is made of durable metal and it is sold individually, over time the threads may wear out eventually requiring a replacement.
FILTER REPLACEMENT – Part Number: D24322
$29.61
In Stock
FILTER REPLACEMENT
Part #D24322
Introducing the reliable Craftsman filter replacement an essential part for maintaining the overall performance of your Craftsman appliance. This filter replacement is designed to meet the highest standards of quality and excellence you have come to expect from Craftsman. It is built for durability and dependability ensuring longevity and increased lifespan of your home appliances. Its efficient design ensures easy installation and an optimal fit making your maintenance routine as straightforward as possible. Choose Craftsman and ensure your home appliances are at peak performance with this high-quality filter replacement.
REGULATOR REPAIR KIT – Part Number: N008792
$41.22
In Stock
REGULATOR REPAIR KIT
★★★★★
★★★★★
(1)
Part #N008792
This air compressor regulator repair kit restores proper pressure control and airflow by replacing worn internal components such as seals and the piston. Designed to address leaks or inconsistent pressure, it helps return the regulator to reliable working condition. Replacing damaged parts with this kit can improve performance and ensure consistent operation.

Common Symptoms of the C3550

How this model fails, and the parts that fix it.

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Can't find this special screw used on many housings etc
4 of 6 people found this instruction helpful.
  • Tim from Tucson, AZ
  • Very Easy
  • 15 - 30 mins
Actually don't like using Torx bits because they are hard to center deep in the channel. I had misplaced these forcing me to order replacements.
My plan is to insert Torx bits before screwing in and using jb weld to secure the bit to the screw, giving me a hex head. Can't find this special screw with a hex head. This screw is called AGC-408 by craftsman.
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Broken ground on original plug
2 of 2 people found this instruction helpful.
  • Debra from PRESCOTT VLY, AZ
  • Really Easy
  • 15 - 30 mins
  • Screw drivers
Removed cover & old cord.
Replaced with new cord & replaced cover.
Works perfect.
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